<單選題>
It took the police lots of time _____ who entered Liu’s house and killed her one year ago.
(A) and found out
(B) find out
(C) finding out
(D) to find out
答案
It took the police lots of time _____ who entered Liu’s house and killed her one year ago.
(A) and found out
(B) find out
(C) finding out
(D) to find out